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Macromolecular organic matter in samples of the asteroid (162173) Ryugu

We investigated the macromolecular organic matter in samples of the asteroid Ryugu—brought to Earth by the Hayabusa2 spacecraft—measuring its elemental, isotopic, and functional group compositions along with its small-scale structures and morphologies. Analytical methods used included spectro-microscopies, electron microscopy, and isotopic microscopy. Read more »

How a Record-Breaking Copper Catalyst Converts CO2 Into Liquid Fuels

Scientists know that copper has a special ability to transform CO2 into valuable chemicals and fuels. But for many years, they struggled to understand how. Now, a research team has gained new insight by capturing real-time movies of copper nanoparticles as they convert CO2 and water into renewable fuels and chemicals: ethylene, ethanol, and propanol, among others. Read more »

New Year’s Message from Andreas Scholl

In this new year’s message, Interim Director Andreas Scholl reflects on the last year’s accomplishments, what makes him proud to work at the ALS, and how the community can be involved in shaping the facility’s future. Read more »

Copper Migrates to Surface of Topological Insulator in Air

An ambient-pressure study of a topological insulator doped with copper revealed that the copper atoms, inserted between the material’s layers, migrate to the surface when exposed to air. The work represents a novel way of modifying the material’s surface composition, which can confer it with new properties such as superconductivity. Read more »

Percolating Puddles in Rich Quantum Landscapes

Combining x-ray photon correlation spectroscopy (XPCS) with scanning micro x-ray diffraction (SµXRD), researchers found that charge density wave domains (known as “puddles”) in a nickelate material exhibit two types of dynamics: small puddles actively “percolate” (fluctuate in size and shape), while large puddles are more static. Read more »

Charge Density Wave Found in Magnetic Kagome Crystal

Researchers discovered a wave-like charge order in a magnetic material with a “kagome” geometric structure and obtained clues to the order’s origins in the material’s electronic structure. By helping to connect certain structures with emergent quantum properties, the work brings us a step closer to the goal of creating materials by design. Read more »PPT-icon-35 PDF-icon-35

Valeriy Yashchuk Elected SPIE Fellow

ALS Senior Staff Scientist and Metrology Program Lead Valeriy Yashchuk has been named a 2023 Fellow of SPIE, the international society for optics and photonics. Fellows are members of distinction who have made significant scientific and technical contributions in the multidisciplinary fields of optics, photonics, and imaging.  Read more »

Save the Date: 2023 User Meeting & Visioning Workshops

The 2023 ALS User Meeting & Visioning Workshops will be held as a hybrid event September 11–15, 2023. The User Meeting, chaired by Yu He, Wendy Gu, and Devin Grabner, will take place Monday and Tuesday. The second half of the week will offer users, staff, and invited guests the opportunity to shape the facility’s future through visioning workshops. Read more »